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Finding the Fourth Proportional to 250,428.78, 345,592.78 and 135,707.67

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Solution

The fourth proportional to 250,428.78, 345,592.78 and 135,707.67 is: 187,277.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,428.78 : 345,592.78 = 135,707.67 : x
  2. Step 2: Convert to fraction form
    250,428.78/345,592.78 = 135,707.67/x
  3. Step 3: Cross multiply
    250,428.78x = 345,592.78 × 135,707.67
  4. Step 4: Simplify right side
    250,428.78x = 46,899,590,603.35
  5. Step 5: Solve for x
    x = 46,899,590,603.35/250,428.78
  6. Step 6: Final answer
    x = 187,277.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.